Filter systems and flue gas cleaning
There are two ways to filter the exhaust gas.
On the one hand there is the wet and dry washing technology and on the other hand the electrostatic filter technology.
For our dry washing technology we can offer ceramic filters and fabric filters.
We prefer ceramic filters for our furnaces up to 400 kg/h, as these have a very high filter efficiency on the one hand and a very long service life on the other.
Which of these both filter technologies is suitable is mainly a question of the amount of exhaust gas and the media itself.
Several modules can thus form a filter system.
By default, these are made up of 1-2-3 and 4 modules and so on.
The design of a plant is based on its operating data.
For our dry-washing systems we additionally recommend to use a dry-scrubbing-solvent injection system.
These dry scrubbing systems are used to remove corrosive and toxic gases (for example SO2 and HCl) from the exhaust gas.
They are very effective with low investment and operating costs.
The temperature range for the dry-scrubbing solvent should be from 170°C up to 300°C.
In this range the dry-scrubbing solvent can transfer the contents.
Flue gas mixed with dry-scrubbing solvent create a layer on outside surface of the filter and accumulate during operation.
At a certain differential pressure level the filter will be cleaned by pressure air with a reverse jet cleaning system which clean the filter by a jet impulse and the dust layer on the outside surface of the filter will fall down.
Therfor a standstill heater is additionally recommended to protect the housing from corrosion.
This heater is only an option, because if it is necessary depends allways only on local conditions.
Requirements on the
Flue gas emission limits as per EN2000/76/EU directive
Please note that each system requires an individual configuration.
An example filter system for a first impression
Flue gas from combustion process
Flue gas from flue gas cooler
Flue gas filter
< 3 mg/Nm³
< 10 mg/Nm³
< 50 mg/Nm³
< 1 mg/Nm³
< 200 mg/Nm³
< 0,5 mg/Nm³
< 0,5 ng/Nm³
TYPE SICF 200-S – SICF 1000-S
Total filter area
Compressed air requirement
Number of candles
Number of modules
Side channel blower
2SD 720 – 50/3,00
SD 80 – 50/5,50
2SD 820 – 50/8,50
SD 9 – 50/13,50
1SD 910 – 50/18,5
2SD 920 – 50/16,50
2SD 920 – 50/16,50
Volume flow rate max.
Fan Motor power
Technical data in detail
As an example for the:
SLUDGE AND SOLID INCINERATION
Overview of all SICF plants (200 - 1000 kg/h)
- SICF 200 (200 kg/h)
- SICF 300 (300 kg/h)
- SICF 400 (400 kg/h)
- SICF 500 (500 kg/h)
- SICF 600 (600 kg/h)
- SICF 800 (800 kg/h)
- SICF 1000 (1000 kg/h)
Subject to change.
A useful guide to tendering
International tender specification template.pdf (759.74KB)